BOTH INTERNATIONAL & INLAND Which vessel may carry her sidelights and stern light in one combined lantern?

Correct Answer: Option B — a 15-meter sailing vessel

Rule 25(b) permits a sailing vessel of less than 20 meters in length to combine her sidelights and sternlight into a single lantern carried at or near the masthead. A 15-meter sailing vessel fits this criterion, whereas power-driven or fishing vessels cannot use this configuration.